Patent
Water-retentive concrete block
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TLDR
In this article, a two-layer structure made up of a compact concrete having fixed thickness in both sides and the bottom and a porous concrete in the inside center of the block is proposed to control a temperature increase due to sunlight and dust drifting.Abstract:
PROBLEM TO BE SOLVED: To control a temperature increase due to sunlight and dust drifting by making a concrete block in a two-layer structure made up of a compact concrete having fixed thickness in both sides and the bottom and a porous concrete in the inside center of the block. SOLUTION: Water retentive compact concrete 2 made by kneading cement, water, and aggregate (sand), is placed at the bottom portion 11 of an outer form. And then water permeable concrete 1 whose void fraction is 10 to 30% that is made by kneading cement, water, and aggregate (stone), is placed in an inner form placed in the center. And then, a water-retentive concrete block is formed by placing the concrete 1 in the part surrounding the inner form. And then a concrete block where water gathers in the center inside is prepared, gathering water suppresses a temperature increase due to sunlight and keeps the water-retentive concrete block in a condition of watered ground constantly and thereby controls drifting of dust.read more
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Patent
Water retentive concrete block
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